Tube Tester Data

Trout · 20th February 2006, 02:41 PM

Hi,
Yesterday at a public auction I picked up a really nice condition Mercury Model 2000 Mutual Conductance Tube tester.

Thumbing through the 56 page tube chart, I noticed many tubes listed have no "Rated Gm Micromhos" Data.

I have tested several brand new J&J 6BQ5/EL84's and the Rated Gm of 11000 matches the listing in the tube chart,
But It really leaves me in the dark on tubes like 6L6 that have no Gm listed.

Is there a way of determining this based on the manufacture Tube data?
Needless to say chart updates are not exactly easy to locate.
Trout

anatech · 20th February 2006, 02:43 PM

Hi Gene,
If the Mercury values agree with other gm listings, then download for a Hickok or the like. The switch settings won't be useful, but you can fill out the gm table.

-Chris

Tom Bavis · 20th February 2006, 02:51 PM

11300 is the data sheet value for transconductance for teh 6BQ5 - so the tube tester must have an operating point that gives a similar value... though it's VERY unlikley that it is the data sheet operating point. But as a start, you can use the tube data sheets (and maybe a few NOS examples) for test values.

Trout · 20th February 2006, 03:44 PM

WAY Cool!

This tester is much better than my other ones, The only drawback being it has no 4 or 5 pin sockets

But I use mostly 7-8 & 9 pin stuff anyway.

Welp, Now I am off looking for hickok data lol
Trout

artm · 16th August 2007, 08:04 AM

I recently picked up a Mercury 2000 without a manual or tube chart.

Any chance you can help me out? I would also make these available to others on several tube sites.

d2134 · 16th August 2007, 09:58 PM

Mercury Model-2000 Mutal Conductance Tube Tester instruction manual PDF file on CD

ebay

Cobra2 · 17th August 2007, 06:06 AM

I have the Merc 2000 data & manual on pdf... (~4 mb)

e-mail me!

Arne K

refference · 17th August 2007, 06:50 AM

Hi trout ,

Mercury sold tube testers for a short time .

The Model 2000 is from the year 1967 , when
the unit price was US$ 99.95 .

The Mercury models 1000 , 1200 and 2000 use
the SAME STANDARD Hickock circuit , then
you have to get any Hickock data-sheet , anyway .
Anatech is correct .

SOURCE : Tube Testers and Classic Electronic
Test Gear by ALAN DOUGLAS .

Regards ,

Carlos

artm · 17th August 2007, 07:51 AM

It's the data sheet that I need.

artm · 17th August 2007, 04:06 PM

Quote:

Originally posted by Cobra2
I have the Merc 2000 data & manual on pdf... (~4 mb)

e-mail me!

Arne K

Arne, I am still a new member and cannot emails others on this board. This is the only board I'm on that does this. Pathetic!

At any rate you may email me: a m j a s AT e a r t h l i n k . n e t

Thank you very much!

20th February 2006, 02:41 PM	#1
Trout diyAudio Member Join Date: Nov 2004 Location: Midwest Madman	Tube Tester Data Hi, Yesterday at a public auction I picked up a really nice condition Mercury Model 2000 Mutual Conductance Tube tester. Thumbing through the 56 page tube chart, I noticed many tubes listed have no "Rated Gm Micromhos" Data. I have tested several brand new J&J 6BQ5/EL84's and the Rated Gm of 11000 matches the listing in the tube chart, But It really leaves me in the dark on tubes like 6L6 that have no Gm listed. Is there a way of determining this based on the manufacture Tube data? Needless to say chart updates are not exactly easy to locate. Trout

17th August 2007, 06:06 AM	#7
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	I have the Merc 2000 data & manual on pdf... (~4 mb) e-mail me! Arne K __________________ Ars longa, vita brevis

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20th February 2006, 02:43 PM	#2
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Gene, If the Mercury values agree with other gm listings, then download for a Hickok or the like. The switch settings won't be useful, but you can fill out the gm table. -Chris

20th February 2006, 02:51 PM	#3
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	11300 is the data sheet value for transconductance for teh 6BQ5 - so the tube tester must have an operating point that gives a similar value... though it's VERY unlikley that it is the data sheet operating point. But as a start, you can use the tube data sheets (and maybe a few NOS examples) for test values.

20th February 2006, 03:44 PM	#4
Trout diyAudio Member Join Date: Nov 2004 Location: Midwest Madman	WAY Cool! This tester is much better than my other ones, The only drawback being it has no 4 or 5 pin sockets But I use mostly 7-8 & 9 pin stuff anyway. Welp, Now I am off looking for hickok data lol Trout

16th August 2007, 08:04 AM	#5
artm diyAudio Member Join Date: Aug 2007 Location: Boston, MA USA	I recently picked up a Mercury 2000 without a manual or tube chart. Any chance you can help me out? I would also make these available to others on several tube sites.

16th August 2007, 09:58 PM	#6
d2134 diyAudio Member Join Date: Mar 2007	Mercury Model-2000 Mutal Conductance Tube Tester instruction manual PDF file on CD ebay

17th August 2007, 06:50 AM	#8
refference diyAudio Member Join Date: Jan 2006 Location: SAO PAULO - SP	Hi trout , Mercury sold tube testers for a short time . The Model 2000 is from the year 1967 , when the unit price was US$ 99.95 . The Mercury models 1000 , 1200 and 2000 use the SAME STANDARD Hickock circuit , then you have to get any Hickock data-sheet , anyway . Anatech is correct . SOURCE : Tube Testers and Classic Electronic Test Gear by ALAN DOUGLAS . Regards , Carlos

17th August 2007, 07:51 AM	#9
artm diyAudio Member Join Date: Aug 2007 Location: Boston, MA USA	It's the data sheet that I need.

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